扇形弓弦预应力组合结构力学性能影响参数分析  

Analysis of influencing factors upon mechanical performances of prestressed sector-bowstring structure

作　　者：宋彧[1] 胡志礼 杨文侠[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050 [2]武汉市政工程设计研究院,湖北武汉430015

出　　处：《兰州理工大学学报》2007年第2期125-129,共5页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金暨中青年科技基金(3ZS041-A25-023)

摘　　要：阐述扇形弓弦预应力组合结构的概念,介绍该结构的特点和受力机理;运用有限元软件ANSYS对弓弦结构进行静力计算,分析矢跨比、垂跨比、弓梁截面惯性矩和腹杆数目对扇形弓弦预应力组合结构受力性能和变形的影响,得出了这些参数对扇形弓弦预应力组合结构的影响关系.The conception, characteristics and kinetic behavior of the prestressed sector-bowstring structure were described. The finite element software ANSYS was adopted in calculation of static forces. The effect of rise-span ratio of arch and rag-span ratio of cable, moment of inertia of arch, the number of struts on load-bearing capacity and deformation of the structure was analyzed. The relationship between the structure and above-mentioned parameter was obtained.

关 键 词：扇形结构 弓弦结构 预应力 矢跨比 垂跨比 弓梁截面惯性矩 腹杆数目 

分 类 号：TU378[建筑科学—结构工程] TU311.41